Steam-pump



J. MASLIN. STEAM PUMP.

(No Model.)

No. 416,172. Patented Dec. 3, 18189.

UNITED STATES PATENT OFFICE.

JOHN MASLIN, OF JERSEY CITY, NEW JERSEY.

STEAM-PUMP.

SPECIFICATION forming part of Letters Patent No. 416,172, dated December 3, 1889.

Application filed May 17, 1889. fierial No. 311,143. (No model.) i

To all whom it may concern..-

Be it known that I, JOHN MAsLIN, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Steam-Pumps, of which the following is a specification, reference being had therein to the accompanying drawings.

This improvement relates more particularly to the steam-pump known as the pulsometer, one form of which is shown in my patent, No. 397,738; but it may be applied to other pumps; and the invention consists in the peculiar construction of the valve-seats and the fastenings therefor, hereinafter more particularly described, and then definitely pointed out in the claims.

In the accompanying drawings, Figure l is a vertical central section of a pulsometer having my improved valve-seats and fastenings; Fig. 2, a plan of the upper valve-seat; Fig. 3, a section of a modification.

Referring now to the details of c0nstruction, A represents the shell of the pulsometer, provided with a lower valve B, of any suitable construction, above which is a diaphragm O, having apertures o c therein. In these apertures are set the seats D D for the valves E and E, which seats are held in place by the bolts G G and the nuts II ll. In the valve on the left-hand side of Fig. 1 the head of the bolt G passes into a square recess (1 in the center of the bottom ,of the valve-seat and screws into the sleeve or nut II, which has its lower end pointed to fit into a conical recess 5 in a projection I, cast on the lower part of the shell A. The seat D for the ball-valve on the opposite side of the same figure is rather difierently arranged, it being provided with a depending cross-bar d, (preferably cast therewith), in which is formed a square recess for the reception of the head of the bolt G, which is provided with a sleeve or nut II, acting in the same manner as the nut II.

From the above description it is evident that by setting the valveseats D D in the apertures c o in the diaphragm C and turning the nuts II II the said valve-seats will be securely held in their positions. Of course the necessary packing should be set between the valve-seats and the diaphragm to keep them tight.

from. By this arrangement of the valve-seats I reduce the cost to a considerable extent, and,

moreover, the valves are quicker and surer in their action than those in my previous patent above mentioned, as the valve-seats are there set diagonally to the pressure, while in the present form the valve-seats are set horizontally, and therefore the valves act quicker, and especially is this the case when the ballvalves are used, as there is no tendency of the valves to rest on one side of their seats, as there is where the seats are set diagonally.

The upper or steam valve-seat J in the neck A is made of Babbitt or other soft metal cast in position. To do this I provide a tapering recess K, of considerably larger size than the valve-seat is designed to be, and set in said recess a mandrel of the shape shown by dotted lines. I then fill-up the steam-passages L L with clay or other non-combustible material, and afterward pour the Babbitt or other soft metal into the recess. As soon as the metal is cooled the mandrel is withdrawn, and thus there is formed a perfectly smooth valveseat J at a very low cost. This will be found a great saving over the plans heretofore adopted in making said valve-seats, as it not only dispenses with the planing of the valveseats, but it also saves the cost of the lower cap usually required and its fitting, which form a considerable additional expense.

What I claim as new is 1. The combination, in a pump and with the casing A thereof, having a horizontal diaphragm provided with an aperture therein, of a valveseat casting set in said aperture, and a fastening device, as the bolt Grand nut H, for securing said valve-seat, one end of said fastening device bearing on the center of the valve-seat casting and the other end having a bearing in an imperforate seat on the inside of the base of the valve-chamber in line with said center, substantially as described.

2. The combination, with a pump, of a casing A, having two horizontal diaphragms and 5 a vertical partition dividing that part above the upper diaphragm into two chambers, an openinginto each chamber, an opening in the lower diaphragm, valve-seat castings set in all three openings and in parallel planes, and 10 three perpendicular fastening devices, each having a bearing at one end of the center of valve-seat casting and another bearing on the casing directly in line with said center, substantially as described.

In testimony whereof I affix my signature, in 15 presence of two Witnesses, this 16th day of May, 1889.

JOHN MASLIN.

\Vitnesses:

J. W. BIssELL, FRANK DAVIS. 

